Once upon a time (i.e. way back in October 2024) I wrapped up a blog in this series with:
Believe it or not, there’s still more to cover. In the coming weeks whenever I get to it, I’d like to cover ways to leverage the built-in astronomy functions for time calculations. Believe it or not, it can really matter in terms of having truly accurate times for things like the start and end of Shabbat and holidays, along with other observances.
And here we are in 2025, when it’s finally time for me to fulfill that promise, and talk about how the KosherJava library (and by extension, the PHP Zmanim port I’ll be using in this blog) can help you calculate and display what amount to straight astronomy in your application or web page.
Once again I need to begin by expressing my deep gratitude to Zachary Weixelbaum and Eliyahu Hershfeld, who both continue to answer so many of my persistent (and often basic) questions with patience, care, and good humor.
The House of the Rising Sun
